Dump body door actuating mechanism



April 2, 1940- w. E. FARRELL DUMP BODY DOOR ACTUATING MECHANISM FiladJan. 31, 1959 3 Sheets-Sheet 1 m W m a 3 w E J M i. .W@ l H H I I I IQMIl|.l I W? L MW .1 ,9 -1 IIUI I HHHH U l ln l H i? .n 5 1 46 1 1 5 April2, 1940. w. E. FARRELL DUMP BODY DOOR ACTUATING MECHANISM Filed Jan. 31,1939 3 Sheets-Sheet 2 April 1940- w. E. FARRELL 2,195,772

mm BODY noon ACTUATING macxmmsm Filed Jan. 31, 1959 s Shets-Sheet s Z0.Farrefl Patented Apr. 2, 1940 UNITED STATES PATENT OFFICE William E.Farrell, Bethlehem, Pa., assignor to Easton Car & Construction Company,Easton,

Application January 31, 1939, Serial No. 253,868

Claims.

This invention relates to new and useful improvements in vehicle dumpbodies generally, although more particularly to side dump bodies.

An object of the invention is to provide a dump '5 body for use oneither rail or auto carriages and which includes a novel mechanismeffective upon the tilting of the body to open the dump door andmaintain the same in a position generally co-planar with the bottom.

1 Another object of the invention is to provide mechanism of the abovedescribed character which will positively effect the closing of the doorupon the return of the body to normal position,

Another object of the invention is to provide mechanism of the abovedescribed character in which door actuating linkage is provided and soconstructed and arranged as to occupy a minimum of space between thetops and the bottoms of the sill structures underlying the body.

Another object of the invention is to provide a linkage of the abovementioned character which effects a toggle look when the door is in theclosed position.

Another object of the invention is to provide a linkage of the abovedescribed character and means rendering it impossible to break thetoggle look without actually tilting the body towards the dischargeposition.

A further object of the invention is to provide mechanism of theaforementioned character. which is simple in design, rugged inconstruction, and economical to manufacture.

Withthese and other objects in view which will more fully appear, thenature of the invention will be more clearly understood by following thedescription. the appended claims, and the several views illustrated inthe accompanying drawings.

In the drawings:

Figure l is a perspective view of a side dump mine car embodying theinvention.

Figure 2 is a transverse vertical section taken across the right end ofthe car and illustrating one linkage assembly in detail.

Figure 3 is a horizontal section taken on line 33 of Figure 2.

Figure 4 is a transverse vertical section similar to Figure 2, butshowing the body tilted at an angleof 30.

Figure 5 is a view similar to Figure 4 showing the body at a normal fulltilt position.

Figure 6 is a detail perspective view showing a portion of one linkageassembly and. the body In in the tilted position.

Figure '7 is a fragmentary front elevation of one linkage assembly.

Referring to the drawings in detail, the invention is shown as embodiedin a mine car including a pair of parallel longitudinal or side sills 5,5 preferably formed from I-beams and rigidly maintained in spacedrelation by transverse sills 6 formed from channels and secured acrossthe respective ends thereof, This sill framework is additionallyreinforced by a metallic plate 1 secured to the upper faces of the sills5 in any approved manner, as by welding.

The side sills dependably support the usual axle and flanged wheelassemblies indicated at 8.

A dump body 9 is supported on and laterally overhangs the side sills 5and. includes a bottom l0, end walls I I ll rigidly secured thereto, arear side wall I2 rigidly secured thereto and to said end walls, and afront side wall or door l3 pivotally connected to the bottom.

The bottom It is reinforced by a plurality of spaced parallel transversechannel beams M dependably secured thereto and disposed with the websthereof extending vertically, the lower flanges normally resting on thesill plate 1. Space is thereby provided intermediate the cover plate Iand the under side of the bottom to accommodate the door actuatingmeans.

A deflecting shield l5 extends the length of the bottom and is disposedadjacent the door side thereof. This shield is provided with anoverhanging lip portion l6 and is secured to the adjacent ends of thereinforcing beams l4 and to the under edge of the bottom.

The body 9 is pivotally connected to one side sill 5 for simultaneousside dumping and door opening operation through the medium of aplurality of hanger assemblies, each of which includes a pair of spacedbrackets l1, l1 secured to the web of said one side sill and extendingoutwardly therefrom and carrying a pivot shaft l8 therebetween. Adownwardly extending open framework hanger l9 having spaced web portions2!], 20 is secured to the outer face of the deflecting shield l5 and isprovided at its lower end with a pair of spaced journals 2|, 2|positioned outside the brackets I1 and through which the pivot shaft l8extends. The upper end of the hanger is provided with a pair of spacedbearings 22, 22 carrying a pivot shaft 23 upon which the door I3 isjournaled.

Each hanger I9 is provided with an arcuate deflecting web 24 disposedintermediate the web portions 20 and overlying the pivot shaft I8.

The door l3 tapers in cross section from bottom to top and includes aninner wall section along the bottom of which is secured an outwardlyextending L-beam 26. The door is reinforced vertically by a plurality ofvertical elements 21 secured to the outer face of the wall section 25and having their lower ends secured to the L-beam through the medium ofangle brackets 28.

Secured to certain of the vertical elements 21 and extending downwardthrough the L-beam in alignment with the respective body hanger bracketsI9, is a plurality of depending brackets 29. Each of these brackets 29includes a web portion 30 extending generally parallel to the adjacentbody side and terminating at its end portions in inwardly extendingflange portions 3 I, the inner ends of which are provided with doorpivotbearings 32. The flange portions 3| 'extend between the web portions 29of the associated hanger I9 and are carried by the respective pivotshaft 23 whereby the door may be swung about said shafts.

In order to effect the movement of the door from a closed position to anopen position simultaneously with the tilting of the car body, there isprovided novel door actuating mechanism which includes a linkageassembly positioned in alignment with each hanger l9.

Each linkage. assembly includes a bracket 33 extending through anaperture 34 in the sill plate 1 and secured in an adjustable manner bymeans of shims to the side sill not carrying the body pivots. A link 39including a web portion 36 and parallel flanges 31, 31 has one endpivotally secured to the bracket 33 by a pivot pin 38 extendingtherethrough. The other end of the link is adapted to receive andpivotally connect with one end of a similar but longer link 39 throughthe medium of a pivot pin 49 extendnig therethrough and having its endsprojecting therebeyond. Rollers 4| are journaled upon the respectiveprojecting ends of the pivot pin for a purpose soon to be explained. Theother end of the link 39 is pivotally connected between the lower webportions of the associated door bracket 29 as at 42. It is to be notedthat the link 39 extends through the space intervennig the web portionsof the hanger l9 and that the entire assembly is located in the spacedefined by the sill plate I, the body bottom, and the opposing webs oftwo adjacent transverse reinforcing beams l4.

By referring to Figure 2 of the drawings it will be observed that whenthe body is in normal or load-receiving position -the door I3 is in theclosed position and is securely maintained in such position by theabove-described linkage assembly which is disposed in straight lineposition, the links 35 and 39 forming a locked toggle joint at theircommon pivot.

In order that the body may be tilted and the door simultaneously openedfor dumping, means are provided for first raising the toggle pivot 40 tobreak the locked toggle joint, and then to guide and restrain the pivotfrom free movement, or in other words to control movement of the door,as the body is tilted. This is accomplished through the medium ofsymmetrically opposed guide castings 43, a pair of which are secured tothe opposed webs of the two transverse beams |4 embracing each linkageassembly. Each casting 43 comprises a web-contacting plate 44 and anoutwardly projecting flange 45 which is shaped to provide an open recess46 forming on its upper internal surface a guide cam 41 and terminatingat one end in a relatively short laterally extending hook or liftingportion 43.

The rollers 4| on the pivot shaft 49 are disposed within the recess 46and engage the opposing surfaces of the hook or lifting portion 43 whenthe body 9 is in normal or load-receiving position.

It will be noted that the guide castings 43 securely lock the togglejoint when the body 9 is in the lading receiving position shown inFigures 1 and 2, and that, due to the positioning of the linkageassembly under the body and over the sill plate 1, it is impossible tobreak the toggle joint by prying or otherwise, except by actuallytilting the body.

As the body is tilted about the pivot l3 the guide castings 43 areraised, thereby raising the link connection 40 througnthe medium of therollers 4| to break the locked toggle. Continued movement of the bodycauses a simultaneous opening of the car door by the relative shorteningof the linkage as the links 39 and 39 tend to pivot and swing togetherabout the upwardly moving pivot 40. As the center of gravity of the doorI 3 is outboard of the door pivot 23, the weight of the door will betransmitted back through the connected linkage. This causes the rollers4| to maintain contact with the cam portions 41 of the guide castings.When the body has been tilted approximately 30 from the horizontal, asshown in Figure 4, the door l3 has opened to a position in which theinner wall 23 is substantially co-planar with the bottom II and isprevented from opening farther by stops 49 on the door brackets 29coming into contact with stop bars 50 secured to the under side of thebottom for that purpose. At this angle of tilt the rollers 4| are justabout to break contact with the cam guides 41, and continued tilting, asto a position shown in Figure 5, allows the guides to move free of therollers.

As the body is returned to normal position, from that of full tilt, thebody floor Ill and the door wall 25 remain in co-planar relation untilthe rollers 4| engage the cam portions 41. Then, as the return movementis continued, downward pressure of the cam portions 41 on the rollers 4|is transmitted through the linkage to effect the closing of the door.Locking of the door in the closed position is effective by the formationof the linkage toggle lock which is maintained by engagement of therollers with the castings 43 as shown in Figure 2.

Thus it will be seen that herein is described a side dump body forvehicles which includes a linkage mechanism effective upon the tiltingof the body to open the dump door, then close the door upon return tothe normal position, and in which is embodied a toggle lock to maintainthe door in the closed position when the body is in normalload-receiving position. It is to be understood, of course, that thenovel linkage herein disclosed can be applied to rear end or other sidedump bodies without departing from the spirit of the invention asdefined in the appended claims.

I claim:

1. In a device of the character described, an undercarriageincluding asupporting framework, a lading body pivotally connected to saidsupporting framework and having a lading supporting bottom, lading spacedefining walls and a dump opening, a door swingably mounted on said bodyand closing said opening, toggle link sets beneath said bottom, thelinks of each set being upon tilting of the body to open or close saiddoor,

and means movable with said body and engageablewith and disengageablefrom said link sets for moving the links to effect and control openingand closing of said door.

2. In a device of the character described, an under carriage including asupporting framework, a lading body pivotally connected to saidsupporting framework and having a lading supporting bottom, lading spacedefining walls and a dump opening, a door swingably mounted on said bodyand closing said opening, toggle link sets beneath said bottom, thelinks of each set being pivotally connected together with said door andsaid under carriage and automatically effective upon tilting of the bodyto open or close said door, and means movable with said body andengageable with and disengageable from said link sets for moving thelinks to effect and control opening and closing of said door, said lastnamed means being effective in the lowered position of the body tosecure said links against movement.

3. In a device of the character described, an under carriage including asupporting frame, a

lading body pivotally connected to said supporting framework and havinga lading supporting bottom, lading space defining walls and a dumpopening, a door swingably mounted on said body and closing said opening,toggle link sets beneath said bottom, the links of each set beingautomatically effective upon tilting of the body to open or close saiddoor, said link sets including two links one having one end pivotallysecured to said supporting frame and its other end pivotally connectedto the other link, said other link having its other end pivotallysecured to the door, and means carried by said body and movable upwardlytherewith as the body is tilted to a dumping position and downwardlytherewith as the body is returned to a non-tilting position and slidablyengageable with the common link pivot of said link sets for moving thelinks and controlling movement of said links to effect and control thedoor opening and closing.

4. In a device of the character descrihed, an under carriage including asupporting framework, a lading body pivotally connected to saidsupporting framework and having a lading supporting bottom, lading spacedefining walls and a dump opening, a door swingably mounted on said bodyand closing said opening, toggle link sets beneath said bottom, thelinks of each set being pivotally connected together with said door andsaid under carriage and automatically effective upon tilting of the bodyto open or close said door, said toggle link sets forming a generallyhorizontal straight line toggle look when said body is disposed innormalnon-tilted position, and means movable with said body andengageable with the links for securing the links in the toggle lockposition when the body is in the normal non-dumping position andeffective upon movement of the body toward a dumping position fordisrupting said toggle lock condition of the links.

5. In a side dump car, a bottom, end and side walls defining a ladingspace open at one side, frame means depending from the body and forminga space therebeneath, under frame means for supporting the body, meanspivotally supporting the body on the under frame means, a door pivotallysupported on the body and movbeneath the body for locking the door inthe closed position, and means movable with the body and effective upontilting thereof in the upward direction for first positively breakingthe toggle and initiating'opening movement of the door and thereaftercontrolling said opening movement and efiective upon downward tiltingmovement of the body for positively returning the door to the closedposition and the toggle links to their normal toggle lock position.

6. In a device of the character described, an under carriage including asupporting frame, a lading body pivotally connected to said supportingframework and having a lading supporting bottom, lading space definingwalls and a dump opening, a door swingably mounted on said body andclosing said opening, toggle link sets beneath said bottom, the links ofeach set being automatically effective upon tilting of the body to openor close said door, said link sets including two links one having oneend pivotally secured to said supporting frame and its other endpivotally connected to the other link, said other link having its otherend pivotally secured to the door, actuating means supported at thepoint of mutual connection of said links, and a slide bracket secured tothe body and engaged with the actuating means for moving the links asthe body is tilted to control opening and closing of said door.

7. In a device of the character described, an under carriage including asupporting frame, a lading body pivotally connected to said supportingframework and having a lading supporting bottom, lading space definingwalls and a dump opening, a door swingably mounted on said body andclosing said opening, toggle link sets beneath said bottom, the links ofeach set being automatically efiective upon tilting of the body to openor close said door, said link sets including two links one having oneend pivotally secured to said supporting frame, and its other endpivotally connected to the other link, said other link having its otherend pivotally secured to the door, actuating means supported at thepoint of mutual connection of said links, and a slide bracket secured tothe body and engaged with the actuating means for moving the links asthe body is tilted to control opening and closing of said door, saidbracket having an end recess portion for receiving said actuating meansand positively holding the links in the door securing toggle lockposition when the body is in its nontilted position.

8. In a device of the character described, an under carriage including asupporting frame, a lading body pivotally connected to said supportingframework and having a lading supporting bottom, lading space definingwalls and a dump opening, a door swingably mounted on said body andclosing said opening, toggle link sets beneath said bottom, the links ofeach set being automatically effective upon tilting of the body to openor close said door, said link sets including two links one having oneend pivotally secured to said supporting frame and its other endpivotally connected to the other link, said other link having its otherend pivotally secured to the door, actuating means supported at thepoint of mutual connection 01' said links, a slide bracket secured tothe body and engaged with the actuating means for moving the links asthe body is tilted to control opening and closing of said door, saidbracket having an end recess portion for receiving said actuating meansand positively holding the links in the door securing toggle lockposition when the body is in its non-tilted position, andjnterengagingstop means for holding the door substantially co-planar with the bodybottom at a definite tilt oi the body, said bracket and actuator meansbeing separable after the stop means become effectively engaged topermit additional tilting of said body.

9. In a device of the character described, an under carriage including asupporting framework, a lading body pivotally connected to saidsupporting framework and having a lading supporting bottom, lading spacedefining walls and a dump opening, a door swingably mounted on said bodyand closing said opening, and means including toggle link sets beneathsaid bottom, the links of each set being movable upon tilting of thebody and being pivotally connected together and with said door and saidunder carriage and automatically eflective upon tilting of the body topositively open or close saiddoor, each link set being normally disposedwith the pivots thereoi in alignment to thereby positively secure thedoor in the closed position.

10. In a device of the character described, an under carriage includinga supporting framework, a lading body pivotally connected to saidsupporting framework and having a lading supporting bottom, lading spacedefining walls and a dump opening, a door swingably mounted on said bodyand closing said opening, and means including toggle link sets beneathsaid bottom, the links of each set being movable upon tilting of thebody and being pivotally connected together and with said door and saidunder carriage and automatically effective upon tilting of the body topositively open or close said door, each link set being normallydisposed with the pivots thereof in alignment to thereby positivelysecure the door in the closed position, and means for engaging saidlinks and securing them against movement when the body is in thenormalor non-tilted position.

WILLIAM E. FARRELL.

